<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <script src="../vue.js"></script>
</head>
<body>
<div id="app">
    <!--动态组件-->
    <!--<component :is="type"></component>-->
    <child-one v-if="type==='child-one'"></child-one>
    <child-two v-if="type==='child-two'"></child-two>
    <button @click="handleClick">change</button>
</div>

<script>
    Vue.component('child-one',{
        template:'<div v-once>child-one</div>'
    })
    Vue.component('child-two',{
        template:'<div v-once>child-two</div>'
    })
    var vm = new Vue({
        el: "#app",
        data: {
            type:'child-one'
        },
        methods:{
            handleClick: function () {
                this.type=this.type==='child-one'?'child-two':'child-one'
            }
        }
    })
</script>
</body>
</html>